WO2002001971A1 - Sterilisateur haute tension et procede servant a steriliser un objet, tel que des grains ou des semences au moyen de ce sterilisateur - Google Patents

Sterilisateur haute tension et procede servant a steriliser un objet, tel que des grains ou des semences au moyen de ce sterilisateur Download PDF

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Publication number
WO2002001971A1
WO2002001971A1 PCT/JP2000/006737 JP0006737W WO0201971A1 WO 2002001971 A1 WO2002001971 A1 WO 2002001971A1 JP 0006737 W JP0006737 W JP 0006737W WO 0201971 A1 WO0201971 A1 WO 0201971A1
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WO
WIPO (PCT)
Prior art keywords
sterilization
discharge
sterilized
side electrode
electrode
Prior art date
Application number
PCT/JP2000/006737
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English (en)
Japanese (ja)
Inventor
Hideo Hasegawa
Koji Takeda
Yutaka Ueki
Toshiyuki Tamura
Original Assignee
Sanyo Electric Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co., Ltd. filed Critical Sanyo Electric Co., Ltd.
Priority to JP2002506607A priority Critical patent/JPWO2002001971A1/ja
Priority to AU2000274484A priority patent/AU2000274484A1/en
Publication of WO2002001971A1 publication Critical patent/WO2002001971A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B9/00—Preservation of edible seeds, e.g. cereals
    • A23B9/06—Preserving by irradiation or electric treatment without heating effect
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/32—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with electric currents without heating effect
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/14—Plasma, i.e. ionised gases

Definitions

  • the present invention relates to a sterilizer using a high voltage and a method for sterilizing an object to be sterilized such as cereals and seeds using the same. More specifically, the present invention relates to cereals and seeds, foods, pharmaceuticals, herbal medicines, High voltage that can be applied to all solid products such as cosmetics, feed, and fertilizers (hereinafter referred to as germs and seeds to be sterilized), and can be applied to cereals, seeds, and foods that are not suitable for heating.
  • TECHNICAL FIELD The present invention relates to a sterilizing apparatus using the same and a method for sterilizing an object to be sterilized such as grains and seeds using the same. Background art
  • heat sterilization has been generally performed as a method of sterilizing food.
  • heat sterilization involves deterioration of the quality of the food itself, accompanied by deterioration of ingredients, aroma, taste, color, etc., and dissipation of effective components.
  • the inventor of the present invention generated a pulse streamer discharge between the electrodes at normal temperature and normal pressure by placing brown rice between the discharge side electrode and the ground side electrode to which a high AC voltage or a high voltage was previously applied in a pulsed manner.
  • a high voltage sterilizer and a sterilization method for sterilizing various bacteria including brown rice spores and the like have been proposed (Japanese Patent Application Laid-Open No. 11-126713, Japanese Patent Application No. Hei 11-110). No. 5,235, Japanese Patent Application No. 11-11052).
  • the high-voltage sterilizer Japanese Patent Application Laid-Open No. 11-2677183
  • any sterilization method was effective for the treatment, those stored for a long time after high-voltage sterilization, such as cereals, seeds, and spices, which were stored without heat treatment after high-voltage sterilization If the microorganisms and bacteria are not completely killed, the microorganisms and bacteria may proliferate during storage, decay during cultivation and distribution, and spread to other crops. was there.
  • a first object of the present invention is to uniformly and uniformly control the quality of an object to be sterilized such as cereals and seeds.
  • a second object of the present invention is to provide a sterilizing apparatus using a high voltage which can easily and efficiently sterilize under normal temperature and normal pressure, and a sterilizing object such as cereals and seeds using the sterilizing apparatus.
  • An object of the present invention is to provide a method for sterilizing easily and efficiently at normal temperature and normal pressure without deteriorating the quality of the product. Disclosure of the invention
  • the sterilization apparatus using high voltage according to claim 1 of the present invention has a discharge-side electrode composed of a large number of needle-shaped electrodes, and a surface covered with an insulating plate separated from the discharge-side electrode.
  • a ground-side electrode made of a plate-shaped electrode, a sterilization device formed of a dielectric surrounding the discharge-side electrode and the ground-side electrode, and a power supply for applying a high voltage between the electrodes.
  • a sterilization target such as cereals and seeds is interposed between a discharge-side electrode and a ground-side electrode in the sterilization treatment apparatus, and sterilization is performed by generating a pulse streamer discharge between the electrodes.
  • various kinds of bacteria such as cereals and seeds, to be sterilized are sterilized at normal temperature and normal pressure by generating a pulse streamer discharge between the electrodes.
  • An insulating plate is provided on the surface of the ground electrode facing the discharge electrode so as to cover the entire surface, so that the discharge from the needle-shaped electrode does not short-circuit to the junction in the pulse streamer discharge.
  • a part of oxygen in the sterilizer is converted to ozone by pulse streamer discharge, and OH is generated from moisture in the air in the sterilizer by the ozone.
  • the sterilization apparatus using high voltage includes a supply unit that supplies a sterilization target such as a grain and a seed, and a hopper unit that stores the sterilization target supplied by the supply unit.
  • a discharge-side electrode comprising a plurality of needle-like electrodes for transferring the sterilization target stored in the hopper and sterilizing the same, and an insulating plate spaced apart from the discharge-side electrode
  • a sterilization device formed of a dielectric surrounding a ground electrode made of a plate-like electrode whose surface is covered with a power supply for applying a high voltage between the electrodes;
  • Discharging means for discharging the sterilized object to be sterilized to the outside, wherein a sterilized object such as cereals and seeds is interposed between a discharge-side electrode and a ground-side electrode in the sterilization treatment apparatus, and between the electrodes.
  • a pulse streamer discharge Characterized By generating a pulse streamer discharge Characterized in that it sterilized.
  • a part of oxygen in the sterilizer is converted to ozone by pulse streamer discharge, and OH is generated from moisture in the air in the sterilizer by the ozone, and an electric potential generated by high-voltage discharge is generated.
  • the cell membrane is ruptured by the difference and sterilization is performed, and by synergistic sterilization by pulse streamer discharge, it automatically and continuously adheres to the surface of the target to be sterilized such as cereals and seeds. Microorganisms, bacteria, etc., that are being sterilized.
  • the sterilization apparatus using high voltage according to claim 3 of the present invention is the sterilization apparatus according to claim 2, wherein the openable shutter provided at the lower part of the sterilization processing apparatus is opened.
  • the method is characterized in that objects to be sterilized, such as cereals and seeds, which have been sterilized by the method, are discharged outside the sterilization apparatus.
  • the objects to be sterilized such as grains and seeds sterilized by the sterilizing apparatus are discharged to the outside of the sterilizing apparatus.
  • the germs and seeds sterilized in step ⁇ can be stored without human touch.
  • the sterilization apparatus utilizing high voltage according to claim 4 of the present invention is the sterilization apparatus according to claim 2 or 3, wherein the hopper is opened by opening and closing a shutter provided at a lower portion of the hopper.
  • the present invention is characterized in that the target for sterilization such as cereals and seeds temporarily stored in a part thereof is transferred to the sterilization apparatus.
  • the target of sterilization such as cereals and seeds
  • the target of sterilization such as cereals and seeds
  • the sterilization apparatus By opening a shutter that can be opened and closed at the bottom of the hopper, the target of sterilization, such as cereals and seeds, temporarily stored in the hopper is transferred to the sterilization apparatus, and a large amount of germs and seeds are sterilized. To be able to sterilize objects without any gaps are doing.
  • the sterilization apparatus using high voltage according to claim 5 of the present invention is the sterilization apparatus according to any one of claims 1 to 4, wherein a large number of the discharge-side electrodes are arranged at predetermined intervals. It is characterized by comprising a needle electrode.
  • the needle electrode is preferably made of a material such as a stainless steel-based material or a platinum-based material, for example, in order to suppress the generation of ⁇ and provide durability.
  • a stainless needle-like electrode having a tip of about 0.1 to 1 ⁇ is preferable, and a very thin electrode having a tip of about 0.1 to 0.5 ⁇ is more preferable.
  • the spacing between the needle electrodes is not particularly limited. Things originally It is preferable to appropriately select and determine so that sterilization can be performed sufficiently and uniformly within a range that does not impair the quality such as flavor and flavor.
  • the above-mentioned interval is usually selected from a range of 5 mm force o 8 mm mm.
  • the sterilization device using high voltage according to claim 6 of the present invention is the sterilization device according to claim 5, wherein the discharge-side electrodes are formed of a large number of needle electrodes arranged in a staggered manner at predetermined intervals. It is characterized by becoming.
  • the object to be sterilized interposed between the electrodes can be sterilized over a wide range and more uniformly. it can.
  • the sterilization apparatus utilizing high voltage according to claim 7 of the present invention is the sterilization apparatus according to any one of claims 1 to 6, wherein the sterilization target is moved between the discharge-side electrode and the ground-side electrode. And sterilized continuously.
  • the present invention it is possible to once fill the sterilization processing device with the sterilization target and sterilize it, and then take out the sterilized sterilization target from the sterilization processing device.
  • the object to be sterilized is moved between the electrode and the ground-side electrode and sterilized by sterilization, and can be continuously sterilized. After the sterilization, it can be continuously taken out from the sterilization apparatus. In this way, the sterilization speed and sterilization efficiency can be improved, and a large number of sterilization targets can be easily sterilized, so that economic efficiency is excellent.
  • the sterilization apparatus using high voltage according to claim 8 of the present invention is the sterilization apparatus according to claim 7, wherein a ground-side electrode is provided on a lower surface of the sterilization processing apparatus, and an object to be sterilized is placed on a conveyor. It is characterized in that it is moved between the discharge side electrode and the ground side electrode and sterilized continuously.
  • the object to be sterilized is placed on a conveyor, and the discharge side electrode and the ground side electrode are placed. If it is moved between the poles and sterilized continuously, the object to be sterilized can be easily moved between the discharge side electrode and the ground side electrode, and after sterilizing continuously, the object to be sterilized continuously is sterilized. Since it can be removed from the sterilization equipment, the sterilization speed and sterilization efficiency can be further improved, making it more economical.
  • the sterilization apparatus using high voltage according to claim 9 of the present invention is characterized in that, in the sterilization apparatus according to claim 7, the ground-side electrode is placed on a conveyor.
  • the ground electrode By placing the ground electrode on the conveyor, it is easy to move the object to be sterilized, and sterilization is performed when the object to be sterilized is moved to a position facing the discharge electrode, so sterilization is also performed. Since it is easy, it can be sterilized continuously, and can be continuously removed from the sterilization processing equipment, the sterilization speed and sterilization efficiency can be improved, and it is economical.
  • the sterilization apparatus utilizing high voltage according to claim 10 of the present invention is characterized in that, in the sterilization apparatus according to any one of claims 1 to 9, the insulating plate is a ceramic plate.
  • an insulating plate used for this purpose generally, an acryl plate or a glass plate is used because it is inexpensive.
  • a ceramic plate having high durability, strength and insulation is preferable.
  • the ceramic plate may be a single large plate or a small and thin ceramic plate such as 1 cm square and 1 mm thick. Small ceramic boards are inexpensive because they are mass-produced, and a large number of small ceramic boards can be bonded together and used as a large ceramic board. it can.
  • the sterilization apparatus using high voltage according to claim 11 of the present invention is the sterilization apparatus according to claim 10, wherein the ceramic plate has a high withstand voltage. It is characterized by a laminated board.
  • a ceramic plate with a high withstand voltage can be preferably used because the applied voltage can be increased.
  • a ceramic plate having a high withstand voltage specifically, for example, an alumina plate is preferable, and a high-purity alumina plate can be more preferably used.
  • the sterilizing apparatus using a high voltage according to claim 1 2 of the present invention, the sterilizing apparatus according to any one of claims 1 to 1 1, wherein the dielectric is 1 0 1 Q ⁇ 1 0 1 4 ⁇ ⁇ It is characterized by being formed of a material having a volume resistivity of at least cm.
  • the sterilizing apparatus for sterilizing a sterilization target, to sterilize safely sterilized object 1 0 1 (high insulating property having 3 ⁇ 1 0 1 4 ⁇ ⁇ cm or more volume resistivity material
  • a material is preferably formed of, for example, a polyolefin resin, an acrylic resin, a polycarbonate resin, various engineering plastics, and FRP. And other electrically insulating materials.
  • Claim 13 of the present invention relates to a sterilizing device according to any one of claims 1 to 12, wherein an object to be sterilized such as cereals and seeds is interposed between the discharge-side electrode and the ground-side electrode.
  • Claim 14 of the present invention is Claim 1 In the sterilization method described in 3, A positive pulse high voltage is applied to the discharge-side electrode.
  • a stable discharge can be achieved by applying a positive pulsed high voltage to the discharge side electrode.
  • the discharge electrode has a rising time of at least 10 nS (nanosecond) and a duration of 1 ⁇ S (microsecond). Seconds) The following high pulse voltage is applied.
  • a pulse high voltage with a rise time of about 10 ns (nanosecond) or more and a duration of about 1 ⁇ s (microsecond) or less is applied to the discharge-side electrode consisting of a large number of needle electrodes arranged at predetermined intervals.
  • a streamer discharge linearly extending from the discharge side electrode is generated, and a wide area between the electrodes can be turned into plasma, and the germicidal objects such as grains and seeds interposed between the electrodes are evenly and uniformly. Sterilizable.
  • FIG. 1 is a perspective view of an embodiment of a sterilization apparatus using a high voltage according to the present invention.
  • FIG. 2 is an explanatory diagram for explaining a discharge-side electrode of the sterilization apparatus shown in FIG. 1, and an openable and closable shutter provided at a lower portion of the ground-side electrode and the sterilization apparatus.
  • FIG. 3 is a side view showing a partial cross section of the sterilizing apparatus shown in FIG. Fig. 4 shows the sterilization process by opening the openable shutter provided at the bottom of the sterilization device of the sterilization device shown in Fig. 1. It is explanatory drawing explaining the state which discharges the processed brown rice.
  • FIG. 5 is an explanatory diagram illustrating a discharge-side electrode and a ground-side electrode of the sterilizer shown in FIG. FIG.
  • FIG. 6 is an explanatory diagram illustrating an example of a power supply used in the present invention.
  • FIG. 7 is an explanatory diagram illustrating another example of an openable and closable shutter provided at a lower portion of the sterilization apparatus.
  • FIG. 8 (A) is an explanatory view showing a state where the shutter shown in FIG. 7 is closed
  • FIG. 8 (B) is an explanatory view showing a state where the shutter is opened.
  • Fig. 9 (A) is an explanatory view showing a state in which the lower shutter of the sterilizer is closed, the shutter at the lower part of the hopper is opened, and grains and seeds in the hopper are transferred to the sterilizer.
  • FIG. 9 (B) is an explanatory view showing a state in which the shutter to be sterilized is opened and the lower shutter of the sterilization apparatus is discharged.
  • FIG. 10 is a perspective view showing another example of the sterilization apparatus of the present invention.
  • FIG. 11 is an explanatory view showing a sterilization treatment apparatus of the present invention which conveys cereals, seeds and the like on a conveyor and sterilizes them.
  • FIG. 12 is an explanatory plan view of a large number of needle electrodes arranged in a staggered manner at predetermined intervals.
  • FIG. 13 is an explanatory plan view showing a portion where pulse streamer discharge is performed on the ground-side electrode and a portion where pulse streamer discharge is not performed.
  • FIG. 14 is an explanatory plan view showing a region where sterilization is performed on the ground electrode.
  • FIG. 15 is an explanatory cross-sectional view of a needle electrode and a flat electrode.
  • FIG. 16 is an explanatory view showing another example of the sterilizing apparatus of the present invention.
  • FIG. 17 (A) is a configuration diagram showing an outline of a main part viewed from the side of another sterilization apparatus of the present invention, and
  • FIG. 17 (B) is an outline view of a main part viewed from the front of the sterilization apparatus. It is a block diagram.
  • FIG. 18 is a configuration diagram showing an outline of a main part of another sterilization apparatus of the present invention.
  • FIG. 19 is a plan view of a conventional needle-like electrode arranged in a large number orderly like a grid.
  • FIG. 20 shows a pulse stream on a conventional ground electrode.
  • FIG. 4 is an explanatory plan view showing a portion where a single stream discharge is performed and a portion where a pulse streamer discharge is not performed.
  • FIG. 21 is an explanatory plan view showing a region where sterilization is performed on a conventional ground-side electrode and a region where sterilization is not performed.
  • FIG. 1 is a perspective view of an embodiment of the sterilizing apparatus utilizing high voltage of the present invention
  • FIG. 2 is provided below the discharge side electrode, the ground side electrode, and the sterilizing apparatus of the sterilizing apparatus shown in FIG.
  • Fig. 3 is a side view showing a partial cross section of the sterilizer shown in Fig. 1
  • Fig. 4 is provided at the lower part of the sterilizer of the sterilizer shown in Fig. 1.
  • Figure 5 shows the discharge-side electrode and ground-side electrode of the sterilizer shown in Figure 1.
  • FIG. 1 is a perspective view of an embodiment of the sterilizing apparatus utilizing high voltage of the present invention
  • FIG. 2 is provided below the discharge side electrode, the ground side electrode, and the sterilizing apparatus of the sterilizing apparatus shown in FIG.
  • Fig. 3 is a side view showing a partial cross section of the sterilizer shown in Fig. 1
  • Fig. 4 is provided at the lower part of the sterilizer of the sterilizer shown in Fig. 1.
  • Figure 5 shows the discharge-side electrode and
  • a sterilizing apparatus 1 of the present invention prepares a sterilization target a such as cereals and seeds in advance and supplies the sterilization target with a supply unit 2 and a supply unit 2.
  • Hopper section 3 for temporarily storing the supplied sterilization target a
  • a sterilization processing apparatus 4 for transferring the sterilization target a stored in the hopper section and sterilizing the same, and this sterilization processing apparatus.
  • Discharge means 5 for discharging the sterilized object a subjected to the sterilization treatment to the outside of the sterilization apparatus 4 is provided.
  • Sterilization unit 4 Atta Li Le resins, poly Kabone preparative resin, the material have a dielectric electrically insulating material (1 0 1 (1 ⁇ 1 0 1 4 ⁇ ⁇ cm or more volume resistivity, such as FRP Is preferable).
  • Needle electrode 6 (It is preferable to use stainless steel material to suppress the generation of ⁇ and to provide durability.
  • a dielectric plate 8 (more preferably a ceramic plate), and an insulating plate 8 (a ceramic plate can be preferably used.
  • Specific examples of the ceramic plate include an alumina plate.
  • Purity 9 0 A ground-side electrode 10 consisting of a flat electrode 9 whose surface is covered by a high-purity aluminum plate having a high withstand voltage of at least% is more preferable.
  • a large number of needle electrodes 6 are connected to conductors 11 (preferably made of a stainless steel material like the needle electrodes 6).
  • the electrode 7 is made of a stainless steel material as described above.
  • the ground electrode 10 fixed to and attached to the front wall 12 of the sterilization apparatus 4 is a flat plate whose surface is covered with an insulating plate 8 inside the sterilization apparatus 4. Sterilization treatment is performed so that the electrode 9 faces the discharge side electrode 7 and maintains a predetermined distance from the discharge side electrode (the distance is not particularly limited, but is usually about 10 mn! To 5 Omm). It is fixedly attached to the rear wall 13 of device 4.
  • Reference numeral 14 denotes a safety door that can be opened and closed for safety installed on the front of the sterilization apparatus 4.
  • the sterilization target a interposed between the electrodes cannot be sterilized over a wide range, resulting in uneven sterilization.
  • the electric field strength for generating a pulse streamer discharge is 20 KVZ cm to 6 OKV / cm. If the germ rate cannot be obtained, and if it exceeds 6 OK VZ cm, there may be a problem in quality such as cracks, cracks, and burns on the object to be sterilized after sterilization. In addition, at a frequency of 100 pps indicating the number of pulses generated per second, the sterilization rate is lower than that at 100 pps at 50 pps where the number of pulses is less than 100 pps. However, if it exceeds 1000 pps, there is a risk that the insulating plate 8 may be damaged, and furthermore, the high voltage generator becomes large-scale, and the equipment cost becomes excessively large, which may make it unprofitable.
  • the pulse width is within the range of 0.05 ⁇ s to 0.5 / s. If the pulse width is less than 0.05 ⁇ s, high voltage cannot be applied, and the voltage is stable even when applied. in the missing, variations occur in the kill rate, the pulse width exceeds 0.5 3, liable to short circuit during discharge, which may cause a problem in quality such as scorching or cracks baked after sterilization.
  • the distance d1 between the large number of needle electrodes 6 is usually in the range from 5 mm to less than 80 mm, preferably from 10 mm to 60 mm, particularly preferably from 25 mm to 30 mm. It is desirable that If the distance d1 is less than 5 mm, the object to be sterilized can be sterilized, but the capacity of the power source 40 described later must be increased, which may be uneconomical. On the other hand, if the distance d1 exceeds 80 mm, the sterilization target a interposed between the electrodes cannot be uniformly sterilized over a wide range, and sterilization may be uneven.
  • the supply means 2, the hopper section 3, the sterilization treatment device 4, the discharge means 5 and the like are integrally connected, and the sterilization target a supplied by the supply means 2 is temporarily stored in the hopper section 3.
  • a predetermined amount of the object to be sterilized a stored in the hopper portion 3 is naturally dropped by gravity and transported, and is interposed between the electrodes 7 to 10 of the sterilization treatment device 4.
  • the high voltage generated by the power source 40 described in the above is applied between the electrodes 7 to 10 to generate a pulse streamer discharge between the electrodes and sterilize.
  • the supply means 2 is a supply port for the object a to be sterilized.
  • a conveyor 16 for driving this conveyor, and a discharge port 18 for discharging the sterilization target a transferred by the conveyor 16 into the hopper 3, as shown in FIG. 3.
  • the sterilization target a supplied from the direction indicated by the white arrow into the supply port 15 is transported upward by the conveyor 16 driven by the motor 17 and is transferred through the discharge port 18 to the hopper. Supplied to part 3.
  • the target a to be sterilized such as cereals and seeds, which has been sterilized by the sterilizing apparatus 4 ⁇ , is opened outside the sterilizing apparatus 4 by opening the openable shutter 19 provided at the lower part of the sterilizing apparatus. It falls naturally and is discharged.
  • the discharging means 5 includes a shutter 19, a driving device 20 for opening and closing the shutter (an electric driving device having a solenoid valve or a pneumatic driving device may be used), a discharging duct 21 and the like.
  • Reference numeral 22 denotes a supporting device for supporting and fixing the processing apparatus 1 for sterilizing an object to be sterilized according to the present invention.
  • Reference numeral 23 denotes a discharge container for storing the sterilized object a subjected to the sterilization treatment.
  • the sterilization target a is sterilized by using the sterilization apparatus 1 of the present invention, sufficient control is required, such as performing the sterilization in a sterile room so that the sterilized sterilization target a is not contaminated again.
  • the sterilization target a such as cereals and seeds in the sterilization apparatus 4 is converted into ozone gas by reacting oxygen in the air between these electrodes by pulse streamer discharge between the discharge electrode 7 and the ground electrode 10. There occurs, the ozone reacts with moisture in the air 0 2 -, OH-, H 2 0 2 3 It produces species of active oxygen, of which OH— (hydroxyradical) is used to kill microorganisms and bacteria. OH— has a higher oxidation-reduction potential than ozone, and therefore has an excellent effect of killing bacteria and the like.
  • FIG. 6 is an explanatory diagram illustrating an example of the power supply 40 used in the present invention.
  • the power supply 40 is composed of a power supply section 41 (200 V AC, 50 Hz), a slider box 42, a high-voltage transformer 43, and a full-wave rectifying bridge 4. It consists of a circuit equipped with 4, a resistor 45, a capacitor 46, a spark gap 47, a resistor 48, and a grounding means 49.
  • the voltage input from the power supply 40 (AC 200 V 50 Hz) is boosted by the slide duck 42 and the high-voltage transformer 43 and rectified by the full-wave rectification bridge 44. After that, the current value is reduced by the resistor 45, and the capacitor 46 is charged. The electric energy charged in the capacitor 46 is instantaneously discharged through the spark gap 47 and becomes a pulse voltage (for example, an energy wave is generated about 100 times per second) and sterilized.
  • the electrode is applied between the discharge-side electrode 7 and the ground-side electrode 10 of the processing apparatus 4 for sterilizing the target object a, and a pulse streamer discharge is generated between the electrodes. Sterilization of the object a to be sterilized, such as cereals and seeds, between 7-10 is performed.
  • the insulating plate 8 may be a single plate, or may be a plate made by bonding edges of small ceramic plates (eg, Al 2 O 3) to each other.
  • Many small Sera Mi click plate and the insulating plate 8 (e.g., A 1 2 O 3) end use an insulating plate 8 made by joining, such as by bonding to each other of In such a case, it is preferable that the mutual positional relationship between the large number of needle electrodes 6 and the joints at the ends of the large number of ceramic plates be a specific positional relationship.
  • the distance between the point at which the straight line drawn from each needle electrode 6 at right angles to the plate electrode 9 reaches the ceramic plate and the joint at the end of the ceramic plate is Regardless of the combination of any of the above-mentioned points and any of the joints, it is preferable to make it equal to or more than 1 Oram. If this distance is less than about 5 mm, a discharge is always short-circuited from the needle electrode 6 to the junction. If this distance is about 7 to 8 mm, the discharge will short-circuit from the needle electrode 6 to the junction depending on the applied voltage.
  • sterilization conditions such as sterilization time, cereal and seed throughput, and humidity in the sterilization apparatus 4 vary depending on the type, form, and type of bacteria to be sterilized, such as cereals and seeds. It is preferable to determine the value and there is no particular limitation. However, for sterilization targets such as cereals and seeds, pulse streamer discharge is performed for approximately 15 to 30 minutes to ensure sterilization.
  • the sterilization apparatus 1 of the present invention is operated, the sterilization target a supplied by the supply means 2 is temporarily stored in the hopper section 3, and the sterilization target a stored in the hopper section 3 is transferred.
  • a predetermined amount is interposed between the electrodes 7 and 10 of the sterilization apparatus 4 with the shutter 19 closed, and the high voltage generated by the power supply 40 is applied between the electrodes 7 and 10 and the pulse streamer is applied between the electrodes. Discharge is generated and sterilization can be easily performed by placing the device under sterilization conditions.
  • the sterilization target a sterilized in the sterilization apparatus 4 is discharged out of the sterilization apparatus 4 by opening the shutter 19.
  • FIG. 7 is an explanatory view for explaining another example of the openable and closable shutter provided at the lower part of the sterilization apparatus
  • FIG. 8 (A) shows a state in which the shutter shown in FIG. 7 is closed
  • FIG. 8B is an explanatory view showing a state where the shutter is opened.
  • portions having the same configuration and the same names as those in FIGS. 1 to 6 are denoted by the same reference numerals.
  • a shutter 19 A is provided at a lower portion of the sterilization apparatus 4.
  • the shutter 19 A is driven and rotated by an opening and closing device 24 such as a motor connected to the shutter 19 A to open and close.
  • an opening and closing device 24 such as a motor connected to the shutter 19 A to open and close.
  • a predetermined amount of germicidal substances a such as cereals and seeds between the electrodes 7 and 10 of the sterilization apparatus 4 with the shutter 19A closed.
  • the high voltage generated by the power source 40 is applied between the electrodes 7 and 10 to generate a pulse streamer discharge between the electrodes, and sterilization is performed by placing the device under sterilization conditions.
  • the shutter 19A is opened by the opening / closing device 24 as shown in Fig. 8 (B)', and is discharged outside the sterilizing device 4 as shown by the white arrow. .
  • Fig. 9 is an explanatory view of a processing apparatus for sterilizing a target a to be sterilized such as cereals and seeds provided with an openable and closable shutter below the hopper and below the sterilizing apparatus. It is an explanatory view showing a state in which the shutter at the lower part of the processing apparatus is closed, the shutter at the lower part of the hopper is opened, and the object to be sterilized in the hopper is transferred to the sterilizing apparatus. It is an explanatory view showing a state in which a shutter is opened and a lower part of the sterilization apparatus is discharged. Note that, in FIG. 9, parts having the same configuration as those in FIGS. One symbol is attached.
  • a shutter 19 which is opened and closed by a driving device 20 is provided at a lower portion of the hopper section 3 and the sterilization apparatus 4, and the sterilization apparatus 4 as shown in FIG. 9 (A) is provided. Opening the lower shutter 19 of the hopper 3 of the germicidal processing device 4 with the lower shutter 1 9 closed, a predetermined amount of the sterilizing target a from the sterilizing target a temporarily stored in the hopper 3 Is transferred and interposed between the electrodes 7-10, and the high voltage generated by the power supply 40 is applied between the electrodes 7-10 as described above, thereby generating a pulse streamer discharge between the electrodes.
  • FIG. 10 is a perspective view showing another example of the sterilization apparatus using high voltage according to the present invention.
  • portions having the same configuration as those in FIGS. 1 to 9 and those having the same names are denoted by the same reference numerals.
  • a sterilizing apparatus 1A of the present invention shown in FIG. 10 shows an example in which the sterilizing apparatus 1 of the present invention shown in FIGS.
  • the inside of the sterilizer 4 has two separators 25 (separator 25 is an acrylic resin having a volume resistivity of at least 10 1 () to 10 14 ⁇ as in the sterilizer 4 itself. (Made of polycarbonate resin, FRP or other electrically insulating material is preferred), and is divided into three cells 4-1, 4-2, 4-3, and each cell 4 A plurality of discharge-side electrodes 7 and a ground-side electrode 10 are provided for each of 1, 4, 1, 2, and 4-3, and a switching device 24 such as a motor is provided at the bottom of the sterilization apparatus 4. There is a shutter 19 A that is driven and rotated and can be opened and closed.
  • the supply means 2 is driven by a drive unit (not shown) to move a predetermined amount of the target a to be sterilized such as cereals and seeds into the hopper 3 along the hopper 3. It is the same as the sterilization apparatus 1 of the present invention shown in FIGS. 1 to 6 except that it can be moved in parallel.
  • the sterilization apparatus 1A of the present invention is operated, and while the supply means 2 is moved in parallel along the hopper section 3, the sterilization target a supplied by the supply means 2 is temporarily stored in the hopper section 3, and the hopper Electrodes 7-1 of each cell 4-1, 4-1, 4-3 of the sterilization apparatus 4 with a predetermined amount of the object to be sterilized a stored in the section 3 transferred and the shutter 19 A closed.
  • the high voltage generated by the power supply 40 is applied between the electrodes 7-10 as described above, and a pulse streamer discharge is generated between the electrodes, as described above.
  • a large amount of cereals and seeds to be sterilized a such as cereals and seeds, can be easily treated and sterilized by placing them under sterile conditions.
  • the sterilization target a sterilized in the sterilization apparatus 4 is discharged to the outside of the sterilization apparatus 4 by opening the shutter 19A.
  • FIG. 11 uses the high voltage of the present invention in which the sterilization device provided below the hopper is leveled and the ground electrode of the sterilization device is formed in a conveyor shape and can be transported.
  • FIG. 11 is an explanatory view of a sterilization apparatus.
  • the sterilization device made of a dielectric is formed so as to surround the discharge electrode and the ground electrode.
  • a ground electrode 10 is provided below the sterilization device 4. It can be driven by conveyor 24.
  • the conveyor 24 conveys the sterilization target a such as cereals and seeds from left to right.
  • the object a to be sterilized is supplied from the hopper 3 onto the conveyor 24 from the left side of the sterilization apparatus 4, and while moving on the conveyor, the high voltage generated by the power source 40 is applied to the electrodes 7 as described above. — Applied between 10 and 10 to generate a pulse streamer discharge between these electrodes, sterilize by placing it under sterilization conditions, and carry it out as shown by the white arrow from the right side of sterilization equipment 4 Discharged into container 23.
  • the pulse streamer discharge is performed even if sterilization is performed.
  • the sterilization target c passing through the location A where the target is passed is sterilized, but the sterilization target d passing through the location B where pulse streamer discharge is not performed is not sufficiently sterilized, resulting in uneven sterilization and uniform sterilization. There was a problem that can not be.
  • this problem can be solved by using a large number of staggered needle-shaped electrodes at predetermined intervals as the discharge-side electrodes.
  • FIG. 12 shows an example of a large number of needle electrodes 6 arranged in a staggered manner at a fixed interval d.
  • a large number of needle electrodes 6 in the first row are arranged at a fixed interval d 1 in the horizontal direction, and the needle electrodes 6 in the second row are A certain distance d2 from the needle electrode 6 in the first row, one needle electrode in the second row between two adjacent needle electrodes of the needle electrode 6 in the first row
  • the third row of needle-shaped electrodes 6 is arranged in a staggered manner, and is arranged at a constant interval d 1 in the horizontal direction.
  • the needle electrodes 6 in the first row are arranged at the same position in the vertical direction. It is provided.
  • the needle electrodes 6 _ 1 in the second row are arranged in a staggered manner, and the needle electrodes 6 _ 2 and 6 _ 3 in the first row are arranged in the second row. It is preferable that the needle electrodes 6 — 4 and 6 — 5 of the third row and the needle electrodes 6 — 6 and 6 — 7 of the third row be positioned approximately equally apart from each other.
  • the needle electrodes 6 are staggered as shown in FIG. Because many are arranged, for example, The germicidal object passing through the location B where pulse streamer discharge is not performed in the first row is not sterilized in the first row, but the location A where pulse streamer discharge is performed in the second row. Sterilization is performed as it passes. Sterilization is performed in the same manner in the third and subsequent columns as well, and as a result, as shown in sterilization range e in FIG. 14, the object to be sterilized can be sufficiently and uniformly sterilized without even sterilization.
  • FIG. 15 is an explanatory diagram of the needle electrode 6 and the ground electrode 10 shown in FIG. 12 and FIG. Insulating plate on the plate-shaped electrode 9 [Sera Mi click plate (A 1 2 O 3)] 8 is disposed, are arranged a large number in a staggered needle electrode 6 on a planar electrode 9 Serra An object to be sterilized (eg, cereals such as brown rice) is interposed between the mixing plate 8 and the sterilizing plate 8 for sterilization.
  • the distance between the needle electrode 6 and the flat electrode 9 is not particularly limited, but is usually a predetermined distance selected from about 1 Omm to 5 Omm. By setting the interval between the needle electrode 6 and the flat electrode 9 to a predetermined interval, the partial discharge is not concentrated and the pulse streamer discharge is performed uniformly.
  • the high voltage generated in the power supply unit 40 (not shown) is applied as a pulse voltage (for example, an energy wave is generated about 100 times per second) between the needle-shaped electrode 6 and the plate-shaped electrode 9,
  • pulse streamer discharge can be generated between the needle electrode 6 and the plate electrode 9 under normal pressure, and the object to be sterilized, which is moved between the electrodes, is sterilized.
  • Applied voltage, frequency, input energy (ca 1 cm 3 ), electric field strength, size of interval d and how to stagger, that is, the degree of staggering is not particularly limited. Does not impair the original flavor, flavor, medicinal properties, performance, dispersibility, etc. of the object It is preferable to select and determine as appropriate so that sterilization can be performed sufficiently uniformly within the range.
  • the distance d between the needle electrodes is usually selected from the range of 5 mm to less than 30 mm, preferably 8 mm to 30 mm. Desirable. If the distance d between the needle electrodes is less than 5 mm, the sterilization target can be sterilized, but the capacity of the power supply unit 40 must be increased, which may be uneconomical. On the other hand, if the distance d between the needle-shaped electrodes exceeds 30 mm, the object to be sterilized interposed between the needle-shaped electrodes 3 and the plate-shaped electrodes 9 cannot be sterilized uniformly, and sterilization may be uneven.
  • the sterilization conditions such as the moving speed of the sterilization target to be moved between the needle-shaped electrode 6 and the flat electrode 9, the sterilization processing time, the throughput of the sterilization target, and the humidity are also different. Since it differs depending on the type, form, etc., it is preferable to appropriately select and determine, and there is no particular limitation.
  • FIG. 16 is a configuration diagram showing an outline of a sterilizer using a high voltage according to another embodiment of the present invention.
  • parts having the same configuration and the same names as those in FIGS. 1 to 6 are denoted by the same reference numerals.
  • Details of the power supply 40 are not shown, but are similar to those shown in FIG. 6. Reply
  • the sterilizing apparatus 4 A of the sterilizing apparatus 1 B of the present invention includes a power supply 40 for generating a high voltage and a number of needle electrodes (not shown) for applying the generated high voltage at a predetermined interval d. Needles placed in a staggered arrangement And an electrode portion 30 provided with a ground electrode 10 composed of a ceramic plate 8 and a flat electrode 9 (not shown). The flat electrode 9 not shown is grounded by grounding means 49. 41 is a power supply unit (200 V AC, 50 Hz).
  • the object to be sterilized (brown rice) a is the electrode section 30. And is sterilized by a pulse streamer discharge between a needle electrode 6 (not shown) and a flat plate electrode 9 (not shown).
  • the sterilized target (brown rice) a is discharged to the outside from the outlet 52 at the lower part of the sterilization treatment device 4A, and enters the discharge container 23. In this way, the object to be sterilized (brown rice) a can be continuously and uniformly sterilized easily at normal temperature and normal pressure.
  • FIGS. 17 (A) and 17 (B) are schematic diagrams showing an outline of a main part of a sterilizer using a high voltage according to another embodiment of the present invention.
  • the sterilization apparatus 4 provided below the hopper 3 2 is leveled, and the ground side electrode 10 and many needle-shaped electrodes 6 of the sterilization apparatus 4 are arranged in a staggered manner at predetermined intervals on the discharge side.
  • a belt conveyor 31 is disposed between the electrodes so that the object a to be sterilized can be transported by the belt conveyor 31 and the object a to be sterilized such as grains and seeds is sterilized between the two electrodes.
  • the sterilization apparatus 4 made of a dielectric is formed so as to surround the discharge electrode and the ground electrode 10.
  • FIG. 17 portions having the same configuration as those in FIGS. 1 to 6 and those having the same names are denoted by the same reference numerals.
  • the power supply 40 and the like are the same as those shown in FIG.
  • Belts conveyors 3 1, resin or synthetic rubber such which volume resistivity of about 1 0 1 ° ⁇ 1 0 1 4 ⁇ ⁇ cm or form with more materials What has been achieved is preferred.
  • the sterilizer 1C described above When the sterilizer 1C described above is operated and the object to be sterilized (brown rice) a is supplied from the hopper 32 to the belt conveyor 31, the object to be sterilized (brown rice) a moves continuously in the direction of the arrow. Then, sterilization is continuously performed between the needle-shaped electrode 6 and the ground-side electrode 10 by pulse streamer discharge.
  • the sterilized target (brown rice) a is discharged from the belt conveyor 31 and put into the discharge container 23. In this way, the object to be sterilized (brown rice) a can be easily and continuously sterilized at normal temperature and normal pressure.
  • 33 is a motor for driving the belt conveyor 31.
  • the distance between the needle-shaped electrode 6 and the flat electrode 9 is 13 mm
  • Sterilization at a frequency of 100 Hz, a pulse width of 100 to 500 nm, an electric field strength of 5 to 40 kV / cm, a voltage of 30 kv / cm, and a pulse streamer discharge time of 30 minutes Then, the bactericidal rate was measured. As a result, the sterilization was performed uniformly and the sterilization rate was 99%.
  • Fig. 19 the same as the embodiment using the sterilizer 1C described above except that a sterilizer equipped with a large number of needle-like electrodes 6 arranged neatly like a grid was used. Then, the object to be sterilized (brown rice) a was sterilized and the sterilization rate was measured. As a result, the sterilization was uneven and the sterilization rate was 95%.
  • FIG. 18 is a configuration diagram showing an outline of a main part of a sterilizer using a high voltage according to another embodiment of the present invention.
  • the sterilizing apparatus 4 provided below the hopper 32 is made horizontal, and the grounding electrode 10 formed in a structure similar to the belt conveyor of the sterilizing apparatus 4 is used to remove the target a to be sterilized such as grains and seeds. So that they can be transported Thus, the object to be sterilized a is sterilized between the discharge-side electrodes in which a large number of needle-shaped electrodes 6 are arranged in a staggered manner at predetermined intervals.
  • the sterilization apparatus 4 made of a dielectric is formed so as to surround the discharge electrode and the ground electrode 10.
  • FIG. 18 portions having the same configuration and the same names as those in FIGS. 1 to 6 are denoted by the same reference numerals.
  • the power supply 40 and the like are the same as those shown in FIG.
  • the sterilizing apparatus 1D of the present invention when the sterilizing apparatus 1D of the present invention is operated to supply the sterilized object (brown rice) a onto the ground electrode 10, the sterilized object (brown rice) a continuously flows in the direction of the arrow. Sterilization is continuously performed by pulse streamer discharge between the needle electrodes 6 which are moved and arranged in a staggered manner and the ground electrode 10 located at a position corresponding to the needle electrodes 6.
  • the sterilized object (brown rice) a that has been sterilized is discharged from the ground electrode 10. In this way, the object to be sterilized (brown rice) a can be easily and continuously sterilized at normal temperature and normal pressure.
  • the humidity at the time of sterilization was not particularly controlled.
  • between the discharge side electrode and the ground side electrode when sterilizing at normal temperature and normal pressure by generating a pulse streamer discharge between the electrodes by interposing a sterilizing target such as cereals and seeds in Sterilization can be performed in an atmosphere controlled to humidity.
  • the sterilization rate can be improved by controlling to high humidity.
  • the sterilizing apparatus using high voltage according to claim 2 of the present invention has the same effect as the sterilizing apparatus according to claim 1 and automatically and continuously applies the surface of the object to be sterilized such as cereals and seeds. It has a remarkable effect that microorganisms and bacteria attached can be effectively sterilized.
  • the sterilization apparatus using high voltage according to claim 3 of the present invention is the sterilization apparatus according to claim 2, wherein the openable shutter provided at the lower portion of the sterilization processing apparatus is opened to sterilize the sterilization apparatus. Disinfecting objects such as cereals and seeds are discharged to the outside of the sterilizing apparatus, and the sterilizing objects such as cereals and seeds sterilized in the sterilizing apparatus can be stored without touching human hands. Effect.
  • the sterilizer using a high voltage according to claim 4 of the present invention is the sterilizer according to claim 2 or 3, wherein the hopper is opened by opening and closing an openable shutter provided at a lower portion of the hopper. It is possible to transfer germs and seeds such as cereals and seeds temporarily stored in the section to the germicidal processing apparatus, and to sterilize a large amount of germs and seeds and other germicidal objects without leaving an interval. Has a remarkable effect.
  • the sterilization device using high voltage according to claim 5 of the present invention is the sterilization device according to any one of claims 1 to 4, wherein a predetermined interval is set.
  • the use of a large number of needle-like electrodes placed on the surface provides uniform discharge and uniform sterilization of the object to be sterilized interposed between the electrodes over a wide range, resulting in a remarkable effect that there is no uneven sterilization.
  • the sterilization apparatus using high voltage according to claim 6 of the present invention is the sterilization apparatus according to claim 5 by using a large number of needle electrodes arranged in a staggered manner at predetermined intervals. It has a remarkable effect that the object to be sterilized interposed between the electrodes can be sterilized over a wide range and more uniformly.
  • the sterilization apparatus using high voltage according to claim 7 of the present invention is the sterilization apparatus according to any one of claims 1 to 6, wherein the sterilization target is disposed between the discharge side electrode and the ground side electrode in the sterilization processing apparatus.
  • the sterilization apparatus utilizing high voltage according to claim 8 of the present invention is the sterilization apparatus according to claim 7, wherein an object to be sterilized is placed on a conveyor and moved between the discharge side electrode and the ground side electrode. If sterilization is performed continuously, the object to be sterilized can be easily moved between the discharge side electrode and the ground side electrode, and can be continuously sterilized and continuously taken out, so that the sterilization speed and sterilization efficiency can be improved. It has the remarkable effect of being improved and more economical.
  • the sterilization apparatus using high voltage according to the ninth aspect of the present invention is the sterilization apparatus according to the seventh aspect, wherein the grounding-side electrode is placed on a conveyor, thereby facilitating movement and sterilization of the sterilization target.
  • sterilization can be performed continuously and can be continuously taken out, so that the sterilization speed and sterilization efficiency can be further improved, and there is a remarkable effect that it is more economical.
  • the sterilization apparatus utilizing high voltage according to claim 10 of the present invention is characterized by claim 10
  • the use of a ceramic plate as the insulating plate has excellent durability and strength, so that the applied voltage can be increased. Effect.
  • the sterilization apparatus using high voltage according to claim 11 of the present invention is further characterized by using the ceramic plate having high withstand voltage as the insulating plate in the sterilization apparatus according to claim 10. This has a remarkable effect that the applied voltage can be increased.
  • the sterilizing apparatus using a high voltage according to claim 1 2 of the present invention, the sterilizing apparatus according to any one of claims 1 to 1 1, wherein the dielectric is 1 0 1 ° ⁇ 1 0 1 4 ⁇ ⁇ Since the material has a volume resistivity of at least cm, it has a remarkable effect of improving safety.
  • Claim 13 of the present invention provides a sterilizing device according to any one of claims 1 to 12, wherein an object to be sterilized such as cereals and seeds is interposed between the discharge-side electrode and the ground-side electrode.
  • Electric field strength 20 KV / cm to 6 OKV / cm, frequency ⁇ ⁇ ⁇ ⁇ ⁇ s ⁇ 100 pps, pulse width in the range of 0.05 is to 0.5 / xs
  • a fifteenth aspect of the present invention is the sterilization method according to the thirteenth or the fifteenth aspect, wherein the discharge side electrode has a rise time of 10 nS (nanosecond) or more and a duration of 1 S (microsecond).
  • nS nanosecond
  • 1 S microsecond
  • the present invention provides a sterilizer using a high voltage and a method thereof that uses a high voltage for sterilizing easily and efficiently at normal temperature and normal pressure without deteriorating the quality of a target to be sterilized such as grains and seeds, and is industrially useful. .

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Abstract

Stérilisateur et procédé de stérilisation servant à stériliser efficacement un objet à stériliser, tel que des grains ou des semences, uniformément à température ordinaire, sous pression normale sans dégrader la qualité de l'objet. Ce stérilisateur est composé d'un dispositif de stérilisation possédant une électrode de décharge constituée par un nombre important d'électrodes à aiguille, une électrode de masse constituée par une électrode plate espacée de l'électrode de décharge et recouverte par une plaque isolante, ainsi qu'un corps diélectrique enfermant les électrodes de décharge et de masse et une alimentation électrique servant à appliquer une haute tension entre les électrodes. On place l'objet, tel que le grain ou la semence, entre l'électrode de décharge et l'électrode de masse et on le stérilise par un train de décharges impulsionnelles déclenché entre les électrodes.
PCT/JP2000/006737 2000-06-30 2000-09-28 Sterilisateur haute tension et procede servant a steriliser un objet, tel que des grains ou des semences au moyen de ce sterilisateur WO2002001971A1 (fr)

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JP2002506607A JPWO2002001971A1 (ja) 2000-06-30 2000-09-28 高電圧を利用した殺菌装置およびそれを用いた穀類及び種子等の殺菌対象物の殺菌方法
AU2000274484A AU2000274484A1 (en) 2000-06-30 2000-09-28 Sterilizer using high voltage and method for sterilizing object to be sterilizedsuch as grain or seed by using the same

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KR101454000B1 (ko) * 2012-11-21 2014-10-30 주식회사 피에스엠 플라즈마를 이용한 푸드 파우더 살균장치
WO2018138361A1 (fr) * 2017-01-27 2018-08-02 Deutsches Institut Für Lebensmitteltechnik E.V. Procédé et dispositif de traitement continu au moyen d'un champ électrique pulsé
CN108850128A (zh) * 2018-08-08 2018-11-23 深圳市奥普斯等离子体科技有限公司 一种低温等离子连续果蔬保鲜处理设备及使用方法
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WO2017094197A1 (fr) * 2015-12-04 2017-06-08 国立大学法人東北大学 Dispositif de stérilisation et procédé de stérilisation
CN106359910A (zh) * 2016-10-20 2017-02-01 中国农业大学 一种青贮原料的等离子体杀菌设备及方法
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CN113000181B (zh) * 2021-02-08 2023-09-29 上海华源制药安徽广生药业有限公司 一种中药饮片原料粉体的加工设备

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KR101454000B1 (ko) * 2012-11-21 2014-10-30 주식회사 피에스엠 플라즈마를 이용한 푸드 파우더 살균장치
WO2018138361A1 (fr) * 2017-01-27 2018-08-02 Deutsches Institut Für Lebensmitteltechnik E.V. Procédé et dispositif de traitement continu au moyen d'un champ électrique pulsé
JP2020508644A (ja) * 2017-01-27 2020-03-26 ドイチェス インスティトゥート フューア レーベンスミッテルテヒニク エー．ファオ． パルス電場を用いて連続処理を行うための方法及び装置
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CN108850128A (zh) * 2018-08-08 2018-11-23 深圳市奥普斯等离子体科技有限公司 一种低温等离子连续果蔬保鲜处理设备及使用方法
US12004526B2 (en) 2019-01-24 2024-06-11 Novagreen Technologies Ltd. Device and method for herbs disinfection by plasma

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KR20030025940A (ko) 2003-03-29
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AU2000274484A1 (en) 2002-01-14
CN1259864C (zh) 2006-06-21

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